opendaylight/md-sal/sal-akka-raft-example/src/main/java/org/opendaylight/controller/cluster/example/Main.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.cluster.example;
  10
  11 import akka.actor.ActorRef;
  12 import akka.actor.ActorSystem;
  13 import akka.actor.PoisonPill;
  14 import com.google.common.base.Optional;
  15 import java.io.BufferedReader;
  16 import java.io.InputStreamReader;
  17 import java.util.Arrays;
  18 import java.util.HashMap;
  19 import java.util.List;
  20 import java.util.Map;
  21 import org.opendaylight.controller.cluster.example.messages.KeyValue;
  22 import org.opendaylight.controller.cluster.raft.ConfigParams;
  23
  24 public final class Main {
  25     private static final ActorSystem ACTOR_SYSTEM = ActorSystem.create();
  26     // Create three example actors
  27     private static Map<String, String> allPeers = new HashMap<>();
  28
  29     static {
  30         allPeers.put("example-1", "akka://default/user/example-1");
  31         allPeers.put("example-2", "akka://default/user/example-2");
  32         allPeers.put("example-3", "akka://default/user/example-3");
  33     }
  34
  35     private Main() {
  36     }
  37
  38     @SuppressWarnings("checkstyle:RegexpSingleLineJava")
  39     public static void main(String[] args) throws Exception {
  40         ActorRef example1Actor =
  41             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-1",
  42                 withoutPeer("example-1"), Optional.<ConfigParams>absent()), "example-1");
  43
  44         ActorRef example2Actor =
  45             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-2",
  46                 withoutPeer("example-2"), Optional.<ConfigParams>absent()), "example-2");
  47
  48         ActorRef example3Actor =
  49             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-3",
  50                 withoutPeer("example-3"), Optional.<ConfigParams>absent()), "example-3");
  51
  52
  53         List<ActorRef> examples = Arrays.asList(example1Actor, example2Actor, example3Actor);
  54
  55         ActorRef clientActor = ACTOR_SYSTEM.actorOf(ClientActor.props(example1Actor));
  56         BufferedReader br =
  57             new BufferedReader(new InputStreamReader(System.in));
  58
  59         System.out.println("Usage :");
  60         System.out.println("s <1-3> to start a peer");
  61         System.out.println("k <1-3> to kill a peer");
  62
  63         while (true) {
  64             System.out.print("Enter command (0 to exit):");
  65             try {
  66                 String line = br.readLine();
  67                 String[] split = line.split(" ");
  68                 if (split.length > 1) {
  69                     String command = split[0];
  70                     String actor = split[1];
  71
  72                     if ("k".equals(command)) {
  73                         int num = Integer.parseInt(actor);
  74                         examples.get(num - 1).tell(PoisonPill.getInstance(), null);
  75                         continue;
  76                     } else if ("s".equals(command)) {
  77                         int num = Integer.parseInt(actor);
  78                         String actorName = "example-" + num;
  79                         examples.add(num - 1,
  80                             ACTOR_SYSTEM.actorOf(ExampleActor.props(actorName,
  81                                 withoutPeer(actorName), Optional.<ConfigParams>absent()),
  82                                 actorName));
  83                         System.out.println("Created actor : " + actorName);
  84                         continue;
  85                     }
  86                 }
  87
  88                 int num = Integer.parseInt(line);
  89                 if (num == 0) {
  90                     System.exit(0);
  91                 }
  92                 clientActor.tell(new KeyValue("key " + num, "value " + num), null);
  93             } catch (NumberFormatException nfe) {
  94                 System.err.println("Invalid Format!");
  95             }
  96         }
  97     }
  98
  99     private static Map<String, String> withoutPeer(String peerId) {
 100         Map<String, String> without = new HashMap<>(allPeers);
 101         without.remove(peerId);
 102         return without;
 103     }
 104 }